Liquid-fuel burner.



W. N. FURTHIVIANN.

LIQUID FUEL BURNER.

APPLICATION FILED IULY 30. I9I3.

Patented Apr. 13, 11915.

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LIQUID-FUEL BURNER.

Specicaton of Letters Patent.

ratentea api?. is, reis.

.application led July 30, 1913. Serial No. 782,010.

T0 all whom t 1mm/concern:A

B it known that li, WILLIAM N. FURTH- MANN, citizen ofthe United States,residing at Chicago, in the'county'of Cook` and State of Illinois, haveinvented a certain new and useful Improvement in Liquid-Fuel Burners, ofwhich the following is a full, clear, concise, and exact description.

My invention relates to improvements in liquid-fuel burners and toautomatic regulatorsfor the fuel supply.

The preferred construction illustrated in the accompanying drawings isoneadapted particularly for use in connection with a heatingI devicesuch as shown in my copending application Serial No. 82,009., filed July30, 1913, although it is not lifiiited to such use.

ln the drawings, Figure 1 is an elevation partly in section of saidpreferred constructionfFig. 2 is an enlarged, sectional'elevation of theneedle valve; Fig. 3 is anfenlarged, top plan view ofthe adjustingdevice for said valve; F ig. 4 is a top plan view of the supporting arm;and Fig. 5 is a top plan view of the lever arm. Fig. 6 is an enlargedsectional view of a detall.

The burner 1 is provided with a conical recess which contains theliquid-fuel, theY base of said burner having a flanged rim 2 adapted tocatch any of the liquid which overflows the top of the burner. Saidburner is supported on a suitable frame comprising radial arms 3 carriedby a supelli mit

porting member 4:, the latter constitutingn the base of the combustionchamber. rlhe frame 3 also carries a circular partition 5 having a cap 6with'an opening somewhat larger than the burner, through whichopeningair is supplied to the flame. A pair of concentric tubes 7 and 8 projectthrough the base of the burner, said tubes being spaced apart andsupported by a suitable coupling 9. The inner tube is preferably longerthan the outer tube and projects above the level of the liquid. Theouter tube terminates below the liquid level and is closed at the top bya ring 10. Said tube is' provided with a plurality of holes 11 near itsupper end, through which the liquid fuel is supplied to the burner.rl`he inner tube 8 supplies air-to the flame, being provided at itslower end with a funnel`12 having a screen 13 arranged therein and madepreferably of gauze,whereby the air isstrained.

Any overflow offuel from the burner is caught by the flanged rim 2, aspreviously stated. llf said'fuel overflows from the latter receptacle,however,it is caught within the flanged tray Or pan 14, the latter beingadjustably mounted on the screw threaded outer tube 7, whereby it may bemoved up anddown to partially obstruct the various openings in the baseof the burner and hence regulate the air supplied to said burner. Saidtray also acts to 'shut ofi' the light that wouldl otherwise be radiateddownwardly from said burner. rllhis is an advantage under certaincircumstances where said light is not desired. Said pan is provided witha'pluralityio'f holes 15 through which the accumulated oil is drainedinto a cup or receptacle 16 also mounted on said tube 7. The Oil withinsaid receptacle is drained off through a pipe 17.

Oil is supplied to the burner through a pipe 18 which 'connects with thecoupling 9 and which leads from a receptacle 19 having glass walls 20through which the level of the oil may be observed. By regulating theoil level in said receptacle, the oil level in the burner may beregulated accordingly. rllhis regulation is affected by means of theneedle valve 21 adapted to fit against a seat 22, said needle valve,even when in closed position, permitting a small flow of oil through theopenings 23, 24 therein (see Fig. 2). The oil is supplied to the valvethrough a suitable pipe 25. The needle valve moves up and downthrough asuitable stufling box 26 and is provided with a short link 27 at itsupper end by which it is connected to a lever 28 pivoted at the point 29to a pair of arms 30 projecting upwardlyhaving a notched periphery,whereby it may be located in any of a number of angular positions by aresilient catch 34. Said adjustable stop may be marked with suitablecharacters in any arbitrary manner to indicate the degree of adjustment.

The invention is not to be limited to the trated, as various other formsmay be de- .vised which falllwithin the scope of the appended claims.

What I claim is l. In a device v of the class described, a burner havinga conical recess adapted to contain liquid-fuel, a pair of concentrictubes projecting into said recess from beneath, one

v terminating below the top of said recess and the other terminatingabove said top, a flanged rim around the outside ofl said burner tocatch the overflow, and means for varying the level of the liquid fuelwithin said conical recess to change the exposed area thereof.

V2. In a device of the class described, a burner having a flanged rim, asupply tube extending into said burner, a tray adjustably mounted ons'aid tube, and an overflow cup also carried by said tube and arrangedbeneath said tray.

3. In combination, a burner having a recess for liquid-fuel, two tubesprojecting cendetails of construction described and illustrally intosaid recess, one of said tubes surrounding the other andtspacedtherefrom, and provided with an outlet whereby liquidfuel suppliedtherethrough may be delivered to said recess, the other of said tubesbeing provided at its lower end with an airy strainer. 1

In combination, a supporting frame, a

cylindrical partition thereon provided with a cap having an o eningtherein, a burner 40 also carried by said frame and terminating nearsaid opening, an air supply tube and a fuel supply tube projecting intosaid burner, one of said tubes terminating below the level of the liquidtherein and the other projecting above said level. 1 n x 5. Incombination,a burner vhaving a fuel recess, a supply tube entering saidrecess, means for connecting said tube with a fuel supply, means forindicating the level of the liquid in said burner, and means forautomatically varying the ow of liquid-fuel to maintain a predeterminedtemperature. Y In-witness whereof I hereunto subscribe my name this 26thday of 'July,'vA. D., 1913. 55

WILLIAM N. FURTHMANN.

Witnesses: l l

MCCLELLAN YOUNG, GEORGE E, FOLK.

